Edinburgh-based mid-market investment group Dunedin Enterprise has invested £5m in Blackrock Programme Management, a London-based construction consultancy outfit.

Blackrock PM has worked on international projects including airports, roads and power stations, and has advised on a number of high-profile jobs such as The Shard and Heathrow Airport.

It is currently advising on over $4bn of construction disputes.

Dunedin Enterprise said the business recorded turnover of £10m in 2014, a tenfold increase over only four years, and is expecting “further significant growth” in 2015.

Dunedin manager Giles Derry said Blackrock PM is a market leader with a strong pipeline of high-profile contracts.

“This investment will support an active expansion strategy, through ongoing organic growth as well as selective acquisitions,” he said.

“Blackrock intends to expand its international focus and, following this investment, is planning to open new offices in Dubai, Singapore and other international arbitration centres.”

The stock was down 2.8 per cent at 330.62p in afternoon trade.